is stem has radial holes at its lower end for the discharge of oil, and wire gauze to arrest impu- rities. Between the upper and lower valve is a spiral spring. When the engine is running, the valves are closed by steam and spring pressure; when stopped, the upper valve is closed L-y the spring,… … In A, Fig. 3, the two valves, a i, are connected by a rod. Angle, Bar, Girder, and Rail Irons. into the interior space of the box. The oil reservoir is cov- By turning the handle, e, in one direction, the valve, a, is Figs. 5 and 6. The shapes are already shown and neei no ered by a screw cap. The…
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